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Subject :NSO    Class : Class 8

Priya wants to carry out a fair test to find out how fast water can pass through four different kinds of soil. She sets up the experiment as shown in the figure below. She uses a stopwatch to measure the time taken for water to pass through each kind of the soil.

Which type of soil is suitable to grow lentils?

(a) S
(b) P
(c) Q
(d) R

Please explain this!!!!

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